Means for grooving or scoring leather



'Sept. 16, 1930. J. w. RADBURNE 1,776,042

MEANS FOR GROOVING OR SCORING LEATHER Filed April 27', 1929 Patented Sept. 16, 1930 JGEN WILLIAM BABBUBNE, OF RUSHDEN, ENGLAND MEANS FOR GROOVIITG GR SCORING LEATHER Application filed. April 27, 1929, Serial No. 358,673, and in Great Britain April 16, 1929.

This invention relates to means for grooving or scoring leather the means being of the kind comprising series of discs provided with peripheral projections and mounted on a. 5 rotatable shaft for scoring or grooving pieces ofleather, and in particular the bevelled or chamfered margins of soles of footwear, for the purpose of improving toe adhesion between the pieces of leather or soles and the inner soles and uppers of footwear when secured together by an adhesive; and its primary object is to facilitate such grooving or scoring, especially in connection with comparatively thin pieces of leather or soles such as are used for the soles of dancing and similar shoes such. soles being of insufficient thickness to enable them to be effectively held 1 against the grooving or scoring means solely through the body of the leather forming 29 the sole.

' According to the invention, a movable member serves to support the margins or portions of the pieces of leather or soles evenly and closely against the grooving or scora 'ing means. The supporting means not only facilitates the grooving or scoring of-the said margins or portions but also ensures an improved result and obviates injury to the hands of the operator through not having 'topress the margins or portions of the pieces fof "leather or soles against thesaid means with his hands. To further facilitate the grooving or scoring operation there is provided .in connection with the movable supporting member a table on whicn the operator can place the pieces of leather or soles to be operated upon by the aforesaid means. The grooving or scoring means comprise a series of apertured discs of known form provided with teeth or projections and arranger on a spindle capable of being rotated at a a continuous cutting ed e.

to b

an arrangement constructed according to the li us or s iral lines in order to form 'rooves ing the grooving or scoring means comprises It will be understood that the use of such a continuous cutting edge renders unnecessary any finishing operation to the pieces of leather or soles 55 prior to the attachment thereof by an adh sive, as is found necessary in some cases when only toothed discs are employed.

In order that the said invention may be clearly understood and readily carried into effect, the same will now be more fully described by way of example with reference to the accompanying drawings, inwhich:-

Figure 1 illustrates in sectional elevation lzii invention;

Figures 2 and 3 are face views of two forms of discs made use of in the grooving or scoring means. i

The movable supporting means in the construction illustrated in the drawings consists i of a roller or wheel a formed with a bevelled periphery and so arranged relatively to a table 7) that a part of the beveled surface of larger diameter projects through an apei ture Z/provided therefor. The table Z) is inclined at a different angle from that of the bevel of the roller or wheel a, the difference being such that the portion of the roller or wheel a of smaller diameter is always flush at iii) that part where the roller or wheel a extends into the aperture 1), while the portion of larger diameter projects through the aperture and above the surface of the table 6. Above the table band over the roller or wheel a is disposed the grooving or scoring means comprising a series of discs 0 mounted on a spindle (Z capable of being rotated at a high speed through the pulley e. The disc with the continuous cutting edge is designated f and is disposed over the portion of the roller or wheel a of larger diameter. The discs are secured to the shaft between nuts 9 screwed thereon. The roller or wheel a is supported by hanging bearings h attached to the under surface of the table 6. From an inspection of the Figure 1 it will be seen that the discs constituting the grooving or scoring means are so arranged as to produce at the edge of the leather under treatment a bevel some- Q I tween the r oller or Wheel-wand the grooving syor'sco ringmeansis greater at'that part Where the'roller or wheel a 1s ofsmaller d ameter than t the part: of" larger diameter. In 1 thus forming the said space it approximately coreresp ondsfwith the shape, in cross se'ction of the bevelled or chamfered margins of the pieces ofleather or soles. Thediscs c arepro- H vided with'suitable formsvofprojectionssuch as shown 1n'F1gure2, whereln the PI'OJGCUOIIS are formed with outer cutting edgesic of the same radius or as shewnin F igure 3 in which ,the pro ect1ons ?on1the dlsc at are formed.

With outer cutting edges theradius. of which Thearrangement of the supporting means "is such that the bevelled margin ofthe leather or sole-canbe evenly grooved or scored tomeet [varying requirements, the discs constituting the upper part ofthe table. v 1

. 7 decreases from one side edge/of the tootlrto 1 the other'side edge'thereof. f The d'iscs are ,,.provided with apertures 03 forfacilitating their: attachment to the shaft 03 which maybe fsuitably supported ma bearing, carried on g the grooving orscoring means being eapahle Y {of variatlon to meetthe same.

-What I claim and desire to secure Let- I ters Patent of the United States is 2%; i I 'Agmachine for v grooving and scoring.

leatherfcomprising a beveled rotatable roller with one end of larger periphery than the .other end, a table with an aperture therein, supportsfsecuringi the roller, to the table zwith-apart fofthe'. larger periphery ot' the I: roller protruding" through the aperture from I -theitop ofthe table,a nda groovingandscor v iojfing member disposed above the r'ollerfand fl r'oller. a

' 2Av machine ffor groovingjiand scoring leather, comprising abevelled rotatable roll 7 er with'one end of larger periphery thanthe other-end, a table with an aperture therein,

supports securing the roller to the under side :rotatable thesa'me plane 'as that; of the ofthe table with'the upper part of the larger 7 flperip'hery' of the roller poj ecting through ,theaperture abovethe topof the table and the" be g top part of the smallerperipheryoftheroller Y 7' being n -line withl'the'said topl of the table', f 'andj.a groovingand scoring member dis L I ,posedabovg the roller and rotatable-fin'the.

sameplane as that of the roller.

3. A' machinefforgrooving and scoring I plane as that of the roller, ,7

disposed above the" roller and rotatable the same plane 'asthat ofthe roller. w H '1 4. A;machinejfongrooving and "scormg R leather comprising an rin 'clined table with an e i aperture therein, 7 a bevelled rotatable roller with one end of larger periphery than the other end, the,bevel ofthe.rollerbeinggreatere T] I tl1antheinelination o-fthe table, supports se-fl;; curing the rollerlto the under side of the table 5- I with thefupper part ofgtheilarger periphery 1 V Softhe roller Fproj'ectingg through the aper-f ture fromthe top side of the'table and the i top part of th'e'-smaller periphery of the: :1 roller being inlinewith the er the table, i and a groovindand scoring'rni'ember disposed;

above the rol er and rotatable :i n'thesame;

v 5. ;A machineior groov aperture therein, a be velled rotatable roller is r ,nQ-and scEjriii 1 a V leather omprising an inclined table wit an r I '85 1 .with ne end of -la er periphe th the" votherend, the, bevel of the roller being greaterthan the inclinationxofthetable,supports securing the rollerto thetahle withthe upper part of "the larger periphery "of :the; roller protruding through thegfaperturei from the 7 t w t s ehdlielsr ieeand ee ingmeinber disposed above therolleriandro-j V rtatab'le in;thesame -plane as that of theroller and composed of se'ries oflltoothed discs and a circular feutterfj T 1 J 6.-'machine 'for'groovingand scoring 7 leather comprising an inclined table'with an;

aperture therein, a bevelled rotatable roller "withone' end of larger periphery than the other end,jthebevel of theroller being greater than theinclination ofthe table,supports j securingwthe rollertothe :under side, of the r f e, I

t b e h the pp part f th arge pej-i riphery of the roller projecting throughfthe above theroller, andir otatable in the same,

V aperture fromithe ttop side otthe tableand T the top-,part oi'the smallerperipheryof the roller-beingain linewith thefltop -of the'tableflfi and a-groovingand scoring memberdisposfed w I f planegas thatof the roller a nd composed of a series of toothed discs arranged withthe,

teeth ofthe several discsstaggeredandi in- V eluding a dise With a peripheralcuttingedge. ,7 ,TJ WILLIAM leather, comprisingan inclined: table with an aperture therein, a bevelled rotatableroller v i j with one end of "largerr periphery than the i s so other end, the bevel of the roller being great- 'er than the inclinationof thetab'le, supportsv Yse curingtheroller to thetable with thei upper 7 part of the larger periphery'of the roller pro- I truding through the aperture from the top of 7 I ,the tableiand a grooving and scoring member a rash 

